Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b60f2a505b53534…

MALICIOUS

PDF

86.9 KB Created: 2021-03-28 00:16:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 048ae7d1b32b32dba563e6b1c5fea791 SHA-1: 9d2dde833ca5fe0b2bc9ac6d734b94f2c18248d7 SHA-256: 4b60f2a505b53534b69278f6df3895411d19a886abf55ef02cad8e965b94439a
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a suspicious domain, which is likely a phishing lure for 'kobo collect apk'. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, potentially for malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://golowaki.ru/wix?keyword=kobo+collect+apk
    • https://cdn-cms.f-static.net/uploads/4401558/normal_6023759036d19.pdf
    • http://nozatisesufi.scienceontheweb.net/como_tirar_manchas_de_sol_da_pele_do_rosto.pdf
    • https://cdn-cms.f-static.net/uploads/4481830/normal_6033da397fe8b.pdf
    • http://lojotiwutorolad.22web.org/54630785342.pdf
    • http://benaletuzulug.sportsontheweb.net/pururufubiziruzukazikok.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://wijogural.epizy.com/dovugajinuregavireraxe.pdf
    • https://s3.amazonaws.com/jozetej/vunilaxiwevovulodules.pdf
    • https://s3.amazonaws.com/sirilagewuga/seagate_srd00f2_2tb_specs.pdf
    • http://suxudogakol.myartsonline.com/biology_form_5_chapter_1_notes.pdf
    • https://uploads.strikinglycdn.com/files/6bb0c7c5-735b-4dbd-93b4-11b5e694c745/ozeri_weight_scale_batteries.pdf
    • https://uploads.strikinglycdn.com/files/2aef5f30-70c9-41c8-9aef-1df18c8c81aa/sefigij.pdf
    • http://serotedirip.epizy.com/tabupun.pdf
    • https://uploads.strikinglycdn.com/files/739c2749-1953-4b93-84fc-d5f2e1c7f923/zoom_h4n_recorder_power_supply.pdf
    • https://uploads.strikinglycdn.com/files/9b689e4d-178f-4217-9f33-7e4481fbda65/kimberle_crenshaw_mapping_the_margins_quotes.pdf
    • https://uploads.strikinglycdn.com/files/6a85628f-e1a0-42c8-b748-a7a73912dd23/symbol_ls4278_wireless_barcode_scanner.pdf
    • https://uploads.strikinglycdn.com/files/cdbbd0cd-da48-4e0d-a54f-033e5bfc8f73/what_the_bible_says_about_loneliness.pdf
    • https://uploads.strikinglycdn.com/files/336afa21-fd16-4505-abda-cb52b168d593/unity_download_student.pdf
    • https://s3.amazonaws.com/xezujuxoz/fimesuweluv.pdf
    • https://uploads.strikinglycdn.com/files/ab919633-c801-4b38-b494-896ed9882577/what_size_tires_come_on_a_jeep_wrangler.pdf
    • https://s3.amazonaws.com/zidenigad/candy_crush_saga_apk_android.pdf
    • https://uploads.strikinglycdn.com/files/fd8186c0-9bf2-4403-98be-c28ecc6f5279/the_lady_or_the_tiger_questions_multiple_choice.pdf
    • https://uploads.strikinglycdn.com/files/16d98a33-5fb3-4214-b0e6-7207e47ecf5a/how_do_i_sign_into_my_google_cloud_account.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f58c.bin
85e70b864f6e573c1eca95f5d563240e363bc44490d77b3d07d0c822d62466f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF58C 4460 bytes
font_01_sfnt_off000104b3.bin
6f6826e8eed5ff37c4eb8f70516b5a7e5e6f622c1bb483a77083696f388d7745		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104B3 10904 bytes
font_02_sfnt_off00012a2b.bin
baa726486440c6b136601d738f6ad1c42961cbdb50f53a1e28cd7e2395b9391c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A2B 16380 bytes
font_03_sfnt_off00014022.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14022 4324 bytes

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